{"id":1882,"date":"2020-09-10T02:53:46","date_gmt":"2020-09-10T02:53:46","guid":{"rendered":"http:\/\/mp4gain.com\/mp4gain\/?p=1882"},"modified":"2020-09-10T02:53:46","modified_gmt":"2020-09-10T02:53:46","slug":"mp3-and-knowledge-of-the-effects-of-possible-settings","status":"publish","type":"post","link":"https:\/\/mp4gain.com\/mp4gain\/mp3-and-knowledge-of-the-effects-of-possible-settings\/","title":{"rendered":"MP3 and knowledge of the effects of possible settings"},"content":{"rendered":"<p>The MP3 audio compression method (also called MPEG-1 Layer 3) uses the properties of the human ear to save storage space. Frequencies inaudible to humans are filtered out of musical pieces. Depending on the degree of compression (so-called bit rates), this leads to no or severe loss of quality.<br \/>\nMusic CDs use a constant bit rate (consumption of storage space \/ unit of time) of 1.4 Mbit per second for a stereo audio signal.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/timnovo.files.wordpress.com\/2010\/12\/mp3-logo.png?w=320\" alt=\"mp3\" width=\"320\" height=\"320\" \/><\/p>\n<p>In comparison, a data rate of 192 kBit \/ s is sufficient with MP3 for almost CD quality music. It follows that the memory requirement is also significantly lower. There is about 10MB per minute of music on a music CD, good quality MP3 files only occupy about one eighth of this memory; So you can put around 8 hours of music on an MP3 CD.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/motortransport.co.uk\/wp-content\/uploads\/2016\/11\/download.jpg\" alt=\"MT Podcast | Motor Transport\" \/><\/p>\n<p>A distinction is made between:<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mp4gain.com\/mp4gain\/mp3-and-knowledge-of-the-effects-of-possible-settings\/#VBR_%E2%80%93_variable_bit_rate_variable_bit_rate\" >VBR &#8211; variable bit rate (variable bit rate)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mp4gain.com\/mp4gain\/mp3-and-knowledge-of-the-effects-of-possible-settings\/#ABR_average_bit_rate\" >ABR: average bit rate<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mp4gain.com\/mp4gain\/mp3-and-knowledge-of-the-effects-of-possible-settings\/#CBR_%E2%80%93_constant_bit_rate\" >CBR &#8211; constant bit rate<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mp4gain.com\/mp4gain\/mp3-and-knowledge-of-the-effects-of-possible-settings\/#Conclusion_the_best_method_is_VBR\" >Conclusion: the best method is VBR.<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"VBR_%E2%80%93_variable_bit_rate_variable_bit_rate\"><\/span>VBR &#8211; variable bit rate (variable bit rate)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>With VBR, the bitrate constantly adapts to the music. Fewer bits are used in more &#8220;quiet&#8221; places (for example, few instruments or quiet passages), so the bit rate is lowered, while in more complex places the bit rate is increased as much as is necessary for the specified quality level is maintained at all times. Therefore, the MP3 file created in this way requires less storage space than MP3 files of comparable quality. The size of the final file is of course unpredictable and can vary greatly depending on the song and its genre. (is better than ABR and CBR)<\/p>\n<h2><span class=\"ez-toc-section\" id=\"ABR_average_bit_rate\"><\/span>ABR: average bit rate<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>ABR makes it possible to use variable bit rates but still meet the given average bit rate very precisely. In this way, the encoder saves bits in quiet places, which are then available to more complex places. The quality of this mode is between CBR and VBR, since the disadvantages of the CBR mode are eliminated, but the advantages of VBR mode only partially come into play, since the higher bit rates are used less frequently so as not to exceed the specified average bit rate. (is better than CBR)<\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBR_%E2%80%93_constant_bit_rate\"><\/span>CBR &#8211; constant bit rate<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In &#8220;old-fashioned&#8221; CBR mode, a certain bit rate is used, regardless of what bit rate is actually required. As a result, higher bit rates are not available for complex locations, which is at the expense of quality, while bits are wasted in quiet locations, which is at the expense of file size.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion_the_best_method_is_VBR\"><\/span>Conclusion: the best method is VBR.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The only exception is the CBR bit rate (320 kbit \/ s), but this no longer makes sense.<br \/>\nother technical terms:<\/p>\n<p>Joint Stereo<\/p>\n<p>Joint stereo, also known as MS stereo, is a lossless encoding of the two audio channels. The great similarity of the channels is exploited by creating two new channels. The sum of the left and right channels is stored in the middle channel (M); the difference between the original channels is encoded in the side channel (S). Therefore, the middle channel contains most of the information, while in the side channel there is only a small amount of information available. Both channels are quantized separately and relatively good compression is achieved.<\/p>\n<p>However, this trick does not work for songs with strong channel separation, that is, if the left and right are almost not similar. Logically mid \/ side stereo is also not possible with mono.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The MP3 audio compression method (also called MPEG-1 Layer 3) uses the properties of the human ear to save storage space. Frequencies inaudible to humans are filtered out of musical pieces. Depending on the degree of compression (so-called bit rates), this leads to no or severe loss of quality. Music CDs use a constant bit &hellip; <a href=\"https:\/\/mp4gain.com\/mp4gain\/mp3-and-knowledge-of-the-effects-of-possible-settings\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;MP3 and knowledge of the effects of possible settings&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[42339,42336,18831,42257,42277,42323,42265,42330,42331,42332,42335,42334,42333,42311,42341,42338,42337,42325,42340],"class_list":["post-1882","post","type-post","status-publish","format-standard","hentry","category-audio-video","tag-bit-rate-vbr","tag-constant-bit-rate-vs-variable-bit-rate","tag-mp3-variable-bit-rate-vs-constant","tag-variable-bit-rate","tag-variable-bit-rate-encoding","tag-variable-bit-rate-video","tag-variable-bit-rate-vs-constant-bit-rate","tag-vbr-bit-rate","tag-vbr-bitrate","tag-vbr-bitrate-settings","tag-vbr-encoding","tag-vbr-example","tag-vbr-format","tag-vbr-variable-bit-rate-quality","tag-vbr-vs-320","tag-vbr-vs-cbr-encoding","tag-vbr-vs-cbr-mp3","tag-what-is-variable-bit-rate","tag-what-is-vbr-bitrate"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>MP3 and knowledge of the effects of possible settings - mp4gain.com<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mp4gain.com\/mp4gain\/mp3-and-knowledge-of-the-effects-of-possible-settings\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MP3 and knowledge of the effects of possible settings - mp4gain.com\" \/>\n<meta property=\"og:description\" content=\"The MP3 audio compression method (also called MPEG-1 Layer 3) uses the properties of the human ear to save storage space. 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